To be a 3 digit palindromic number, it must be of the form aba.I assume that a 3 digit number must be at least 100 (so that 020 for example does not count as a 3 digit number):a can be any of the nine digits 1-9;for each of these b can be any of the ten digits 0-9Thus there are 9 x 10 = 90 three digit palindromic numbers.
Squares of primes.
All numbers that are the square of primes have exactly 3 factors.
The squares of all prime numbers above 2 have exactly 3 factors.
Numbers with exactly three factors are squares of prime numbers.
9
The squares of all prime numbers have 3 factors.
There is: 101,111,121,131,141,151,161,171,181,191 202,212,222,etc... 999 There are 90 palindromic 3 digit numbers
To be a 3 digit palindromic number, it must be of the form aba.I assume that a 3 digit number must be at least 100 (so that 020 for example does not count as a 3 digit number):a can be any of the nine digits 1-9;for each of these b can be any of the ten digits 0-9Thus there are 9 x 10 = 90 three digit palindromic numbers.
squares of prime numbers
The squares of prime numbers greater than 10.
Squares of primes.
Prime squares
All numbers that are the square of primes have exactly 3 factors.
The squares of all prime numbers above 2 have exactly 3 factors.
Numbers can't be divided by multiples. They get divided by factors. Factors go into numbers, numbers go into multiples.
Squares of prime numbers have exactly three factors.